Yellowing or stained teeth can often cause you to feel a little self conscious, forcing you to 'hide' your smile in photos and at events. However, shoppers who have experienced this for years have found a solution that has transformed their smile from dull and stained to white and bright in 'just a few days' – and for only £25.

Backed by dentists, beauty buffs are raving about the brand MySweetSmile and it's 'game changing' teeth whitening powder, which only needs applying twice a week for two-four minutes at a time for impressive results. The formula includes a trio of hero ingredients – pentasodium triphosphate, strontium chloride hexahydrate and calcium carbonate – to reverse all types of stains and yellowing and leave teeth squeaky clean.

Those who use the teeth whitening powder can also be rest assured that they'll experience little to no irritation as it's been concocted with a non-abrasive formula. It's safe to use on enamel and gums – and contains no peroxide, which many teeth whitening solutions use.

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It's also a pretty easy treatment to work into your current morning routine and works like brushing your teeth. Simply coat your toothbrush with the powder (by dipping it into the tub or using the spill tray), brush for two-to-four minutes and rinse. Use twice a week to maintain results.

The powder, which works to remove plaque and other debris from your teeth also, has shocked shoppers who had given up on their teeth, deeming them "ruined" after "black coffee and smoking" had left them stained to "the point I avoided smiling". After regularly using the solution, one said: "The difference is incredible. It's removed all the yellow stains and my teeth are looking 10x better!"

MySweetSmile's teeth whitening powder

The results after using the MySweetSmile teeth whitening powder for just a few weeks are pretty impressive

It's no wonder the teeth whitening powder has over 5,000 reviews on TrustPilot and a 4.9 star rating on MySweetSmile's site.

One shopper gushed: "I genuinely used to find myself hiding my smile, particularly at family gatherings, but not anymore! Thanks to MySweetSmile's powder, I'm confident and my teeth are shining brighter than ever. I highly recommend to anyone looking for a quick whitening fix."

Another exclaimed: "Total game changer – MySweetSmile powder has brightened my smile more than any other product i've tried. It hasn't made my teeth sensitive either, great purchase!"

A third, who was "so impressed" added: "Their whitening powder not only improved my smile but also boosted my confidence now i can smile without being scared of people seeing my coffee stains. thank you so much."

Although many people have experienced stellar results, others haven't had quite as much to grin about with a number of customers citing little improvement to their smile, with one writing a three-star review which read: "After five teeth brushing sessions as directed on the packaging, I have seen little, if any, improvement in my tooth colour. I will persevere for sure. Hence the 3 star rating."

Another remarked: "I have been using MySweetSmile for a couple of weeks now and I haven't found it to make any difference to my teeth. Yes they definitely feel cleaner when done at the time but no difference in colour. Slightly disappointed although mouth does feel fresher after immediate use."

That being said, one person urged fellow shoppers to stick with it if they already have relatively white teeth as they wrote: "Those that see immediate results must have very stained teeth to see the difference so for those who have reasonably white teeth to start with expect some time to see improvements."

They added: "Having said that I may buy another pot and if improvements continue will carry on using it.3 stars is because I didn't see the fantastic immediate results some say they got got.The company are good and keep in touch to see if all is well.My stars may change as I go on."

Now is a great time to stock up on the whitening teeth powder as MySweetSmile is currently running a three for two deal that sees you saving up to £25 if you buy three products – the third is discounted as free at the checkout, meaning you'll only pay for two.

If you're after a quick fix that leaves your teeth whiter in just minutes, the brand's Precision Whitening Pen, £19.99, gives you pearly whites in just ten minutes. Plus, as the pen is small enough to fit in your bag, you can use it for on-the-go touch ups. For when you've got a bit more time, MySweetSmile's PAP teeth whitening strips can give you a dazzling smile in just 30 minutes, reversing 30 years of stains in a flash. Also £19.99, the pack contain ten individually packaged treatments and, using a PAP based formula, you won't get any 'nasty' irritation, or sensitive side effects. Get them here.

The brand also offers an enamel strengthening serum, £24.99, that'll help slow down tooth decay and plaque formation, reduce tooth sensitivity, boost enamel repair as well as whiten your gnashers. Get it here.

Alternatively, if you're not sold on MySweetSmile or don't fancy spending £25, Hismile's PAP+ powder is available at Boots for £10.67 and has yielded some 'noticeable' results. Smilekit's PAP+ teeth whitening powder, too, has received praise and is on Amazon for only £9.99.

Although for MySweetSmile's Teeth Whitening Powder for £24.99, get it here.

By Editor